Every Friday when housecleaning, I vacuum my sewing machines with a micro vacuum attachment kit. I purchased the kit at a computer store since it is made for computers' keyboards. With the various attachments I'm able to probe into the machine and clear out all those tiny pieces of thread, lint and who knows what else. I also use a chenille stick to go around my bobbin case and feed dogs. Both my Janomes hum their thanks. Belles